=== modified file 'modules/node/node.module'
--- modules/node/node.module	
+++ modules/node/node.module	
@@ -910,13 +910,17 @@ function node_last_changed($nid) {
  */
 function node_operations() {
   $operations = array(
-    'approve' =>   array(t('Approve the selected posts'), 'UPDATE {node} SET status = 1 WHERE nid = %d'),
-    'promote' =>   array(t('Promote the selected posts'), 'UPDATE {node} SET status = 1, promote = 1 WHERE nid = %d'),
-    'sticky' =>    array(t('Make the selected posts sticky'), 'UPDATE {node} SET status = 1, sticky = 1 WHERE nid = %d'),
-    'demote' =>    array(t('Demote the selected posts'), 'UPDATE {node} SET promote = 0 WHERE nid = %d'),
-    'unpublish' => array(t('Unpublish the selected posts'), 'UPDATE {node} SET status = 0 WHERE nid = %d'),
+    'approve' =>   array(t('Approve the selected posts'), array('query' => 'UPDATE {node} SET status = 1 WHERE nid = %d')),
+    'promote' =>   array(t('Promote the selected posts'), array('query' => 'UPDATE {node} SET status = 1, promote = 1 WHERE nid = %d')),
+    'sticky' =>    array(t('Make the selected posts sticky'), array('query' => 'UPDATE {node} SET status = 1, sticky = 1 WHERE nid = %d')),
+    'demote' =>    array(t('Demote the selected posts'), array('query' => 'UPDATE {node} SET promote = 0 WHERE nid = %d')),
+    'unpublish' => array(t('Unpublish the selected posts'), array('query' => 'UPDATE {node} SET status = 0 WHERE nid = %d')),
     'delete' =>    array(t('Delete the selected posts'), '')
   );
+  // Allow other modules to add mass operations
+  $extra = module_invoke_all('node_operations');
+  $operations = array_merge($operations, $extra);
+
   return $operations;
 }
 
@@ -1089,16 +1093,47 @@ function node_filter_form_submit() {
  */
 function node_admin_nodes_submit($form_id, $edit) {
   $operations = node_operations();
-  if ($operations[$edit['operation']][1]) {
+  // Filter out unchecked nodes
+  $nodes = array_diff($edit['nodes'], array(0));
+  $operation = $operations[$edit['operation']][1];
+  // Database query operation.
+  if ($operation['query']) {
     // Flag changes
-    $operation = $operations[$edit['operation']][1];
-    foreach ($edit['nodes'] as $nid => $value) {
-      if ($value) {
-        db_query($operation, $nid);
-      }
+    $query = $operation['query'];
+    foreach ($nodes as $nid) {
+        db_query($query, $nid);
     }
     drupal_set_message(t('The update has been performed.'));
   }
+  // Function callback operation.
+  elseif ($operation['callback']) {
+    $function = $operation['callback'];
+    if ($operation['callback arguments']) {
+      $args = array_merge(array($nodes), $operation['callback arguments']);
+    }
+    else {
+      $args = array($nodes);
+    }
+    call_user_func_array($function, $args);
+    drupal_set_message(t('The update has been performed.'));
+  }
+}
+
+function node_node_operations() {
+  global $user;
+  $operations = array(
+    'owner' =>   array(t('Change ownership to root user'), array('query' => 'UPDATE {node} SET uid = 1 WHERE nid = %d')),
+    'print' =>   array(t('Print title & current user'), array('callback' => 'node_print_title', 'callback arguments' => array($user->name))),
+  );
+
+  return $operations;
+}
+
+function node_print_title($nodes, $name) {
+  foreach ($nodes as $nid) {
+  	$node = node_load($nid);
+  	drupal_set_message("$name: $node->title");
+  }
 }
 
 function node_admin_nodes_validate($form_id, $edit) {